Every bar needs two rums: One to sip, and one to mix. For the former, look for a darker rum like Mount Gay Black Barrel or Admiral Rodney ($50), an ideal rum for sipping straight, coming at you from every direction – caramel, citrus, vanilla, and a hint of the barrel. Float a teaspoon of these atop a mojito for extra kick. For a mixing rum – to make dark and stormys or mojitos – go clear with 3 Stars Plantation and Bully Boys' white rums.